Lene Hau. Lene Vestergaard Hau (born November 13, 1959 in Vejle, Denmark) is a Danish physicist. In 1999, she led a Harvard University team who, by use of a Bose-Einstein condensate, succeeded in slowing a beam of light to about 17 metres per second, and, in 2001, was able to stop a beam completely.
Zeta is the sixth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 7. It was derived from the Phoenician letter zayin. Letters that arose from zeta include the Roman Z and Cyrillic Ð.
Zeta's national and local programs include endowment of its National Educational Foundation; community outreach services; and support of multiple affiliate organizations. Zeta Phi Beta Sorority, Inc. was founded on the campus of Howard University on January 16, 1920 by five illustrious women. These five women, our five pearls, were trailblazers; transcending the bounds of finer womanhood.